"所以目前的外匯市場是扭曲的,不足以反應真正的匯率,所以要去看黑市的會比較準~" Not really. Black market's rate and operating condition are directly and closely tied to the Government controlled rate. There will be a mark up or mark down made at the black market depending on the cases. Regardless the deviation will fall into a tight range simply because a much bigger and controlled government currency market still exits and still dominates all inter-government and/or international banking businesses and multinational corporations currency settlements that occur on a daily basis. Black market's trade volume will be a drop in an ocean. The only way to measure exchange rate is to remove government control or restrictions. In a free market, a true worth of a country's currency will be measured and "voted" (traded) at any given time pending economic, financial and sometimes even geo-political conditions.